Hinderwell urban district was absorbed by Whitby rural district in 1932

A new Saltburn and Marske by the Sea urban district was formed from Saltburn by the Sea urban district and part of Guisborough rural district. the remainder of Guisborough RD passed to Loftus urban district and Whitby rural district in 1932

Kirklington cum Upsland urban district was absorbed by Bedale rural district in 1934

Masham urban district was redesignated as Masham rural district in 1934

In 1968 a new county borough of Teesside was created, taking in Middlesbrough and parts of the administrative counties of Durham and North Riding. From the North Riding came the boroughs of Redcar and Thornaby-on-Tees, the urban district of Eston, and part of Stokesley rural district (although the remainder of the rural district continued as part of the county). The entirety of Teesside, including the parts north of the River Tees historically in Durham, was associated with the North Riding for lieutenancy and other purposes.

In 1974 the North Riding was abolished as both an administrative county and a Lieutenancy. The majority of its former area became part of the new non-metropolitan county of North Yorkshire, which also includes much of the northern rural part of the West Riding as well as the city of York and the northern and western fringes of the traditional East Riding. Middlesbrough and Redcar became part of Cleveland and are now in independent unitary authorities which became part of North Yorkshire for ceremonial purposes. The Startforth Rural District (South Teesdale) was transferred to County Durham, becoming part of the Teesdale.

During a further local government review in the 2000s as part of the preparations for the regional assembly referendums, a North Riding of Yorkshire unitary authority consisting of Richmondshire, Hambleton, Ryedale and Scarborough was again suggested. However, the Commission withdrew this in favour or two unitary authorities, one for Hambleton and Richmondshire, the other for Ryedale and Scarborough.[7]

Ancient divisions

Unlike most counties in Great Britain, which were divided anciently into hundreds, Yorkshire was divided first into three ridings and then into numerous wapentakes within each riding. Within the North Riding of Yorkshire there were thirteen wapentakes in total, this included;